Improvement in hoop sawing and finishing machines



J. MIOHELS. Hoop Snwing and Finishing Machine.

No. 222,297. Patented Dec. 2,1879.

Aiiepi.

. J-Za/M MPETERS. rno'm um PATENT OFFICE.

JAGOB-MIOHELS, OFDETROIT, Assienon T0 CHARLES E. CHITTENDEN, or

ECORSE, AND MOSES W. FIELD, OF DETROlT, MICHIGAN,

TO EACH.

ONE F'OURTH IMPROVEMENT 'IN HOO'P SAWING AND FINISHING MACHINES.

Specification forming part of Letters Patent No. 222,297, dated December 2, 1879; application fired February '4, 1879.

To all whom it may concewt:

Be it known that I, JACOB MICHELS, of Detroit, in the county of Wayne and State of -Michigan, have invented an Improvement in Hoop Sawing and Finishing Machines, of which the following is a specification.

The nature of my invention relates to new and novel and useful improvements in the construction of machines for sawing hoops from planks of the proper thickness, and resawing the cants diagonally into beveled hoops, each cant making two hoops, and rounding off and finishing the edges of the hoops ca'nts.' Fig. 3 is alike view of the inclined saw-arbor with its saws, showing the method of sawing the rectangular strips or cants into beveled. hoops. Fig. 4 is a plan or elevation of the rotating head and tool .by means of which the edges of the hoops are rounded or finished. Fig. 5 is a detached perspective of the presser bar and its spurs, by means-of which the strips or cants are heldto the face of the table.

A represents the fr'amewhich sustains the operating parts of the machine, and it is providedwith a table, B, Corrugated feed-rolls 0' D are journaled to the frame, the former above the table and the latter below the same, but so as to present its highest point through an opening prepared in the table therefor.

E is an arbor, suitably journaled, carrying a series of circular saws,- F, secured at such distances apart as will saw a plank into cants or slatsof suitable width to make, when re-.

sawed, two hoops.

G is a prosper-bar, secured to the frame and projectingtherefrom at right angles over the table B'at just sufficient distance above to allow the plank being operated upon to pass between said bar and the face of the table to prevent said plank from any vertical play. This bar has downwardly-projecting spurs or parting-strips a, rigidly secured. at distances equal to the distances between the saws F,

and so arranged that the spurs and saws are coincident. These partin'gstrips enter the kerfi made by the saws in sawing -the plank into slats b or cants, and hold said cants in lateral place, the outside spur overhanging the outer edge of the outer slat. A g i As the plank is fed forward by the feed-rolls it passes between two rotating and suitablyjournaled cutter-heads, H, which are provided with cutters I, generally of the form shown in Fig. 4, and these out two heads on eachupper and lower edge of each slat or can't, care being taken in setting the cutters that the .upper edge is cut with a wider and anarrower bead,

'while the lower edge is cut with a narrower and wider bead--that is to say, the wider bead above is opposite the narrower bead below, and the narrower head above opposite the wider .bead below, as shown in Fig. 3. In its advance the sawed and divided end of the plank isnext presehted to another presser-bar, J, constructed and operating precisely like the presserv-bar G, above described, and which is placed at this point to confine the cants for the last operation. This is done by means of circular sawsK upon the arbor L, so journaled upon an incline that the saws are presented diagonally to the advancing rectangular ends of the slats or cants. By this arrangement the cants are cut diagonally from top to bottom, and each one divided into two finished hoops with rounded edges,

as shown in cross-section in Fig.3.

The saws upon the inelinedarbor, in order to leave the outer or bevel sides of the hoops smooth, should be so constructed that the points of the teeth will rip the cants intwo.

The sides of said teeth should plane and smooth the sides of the hoops. I

What I claim as my inventionis- 1. The combination, in a hoop-cuttingi' ma chine, of upright saws foreiitting a plankinto rectangular strips, inclined saws for dividing each ofsaid strips into two beveled hoopstrips,

and cutters for rounding both edges of su saws, for first euttingaplankinto rectangular strips, substantially as described. strips and then into beveled hoop-strips, and

2. In combination, in ahoop-sawing'machine. cutters for rounding both edges of such strips, a series of vertical circular saws, a pair of roof pressure-bars GJ having pendent plate ato tary cutters, and a series of diagonally-placed separate and guide the strips, substantially as circular saws adapted to saw a plank into described and shown. u

cants out two beadsupon the upper and lower edges thereof, and resaw the same into beyel JACOB hoops, substantially as specified. Witnesses:

3. In a hoop-cutting machine, the coinbina- H. S. SPRAGUE, tion, with the upright and inclined circular CHARLES J. HUNT. 

